Q21 / 90 · JEE Main 2024 (04 Apr Shift 1) · Chemistry

Number of molecules/species from the following having one unpaired electron is $\qquad$ $\mathrm{O}_2, \mathrm{O}_2^{-1}, \mathrm{NO}, \mathrm{CN}^{-1}, \mathrm{O}_2^{2-}$

Correct answer: 2

Solution

According to M.O.T. $\mathrm{O}_2 \rightarrow$ no. of unpaired electrons $=2$ $\mathrm{O}_2^{-} \rightarrow$ no. of unpaired electron $=1$ $\mathrm{NO} \rightarrow$ no. of unpaired electron $=1$ $\mathrm{CN}^{-} \rightarrow$ no. of unpaired electron $=0$ $\mathrm{O}_2^{2-} \rightarrow$ no. of unpaired electron $=0$

Hence, the correct answer is 2.

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Number of molecules/species from the following having one unpaired electron is \(\qquad\) \(\mathrm{O}_2, \mathrm{O}_2^{-1}, \mathrm{NO}, \mathrm{CN}^{-1}, \mathrm{O}_2^{2-}\)

Solution

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